DPM for sub floor that fills with rainwater??

Joined
17 Dec 2006
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Leeds
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United Kingdom
Hi
We are in the process of installing a new kitchen, and after removing some floorboards and joists because of rot, have discovered that when it rains heavily (in Yorkshire this is alot!) the rain water starts to seep into the sub floor (we have a wooden floor raised above this) Our house is a 1930's house and the original kitchen has had a small extension at the back. We have noticed that there are no air bricks on this wall and there was quite alot of mould when we ripped the old kitchen out the new bit of extension floor has concrete, while the orignal has hardcore.
We were going to put a DPM onto the hardcore bit but when we saw the rain this morning trickling in, we wondered if this was the right thing to do or would it trap the water or move the water further into the house?? We will look at solving the rain water issue when the kitchen is done. We think it happens because our garden slopes towards the back of the house and the patio fills up like a bowl when it rains, so we think this is why the rain is running in.
Please can anybody give any advice? I have been without a kitchen now for 4 weeks and it is starting to become the job that never ends! :rolleyes:
 
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If the ground slopes down to the back of the house, you really need to divert the water away to the side with a field drain.
Don't fit your kitchen until you have solved this issue.
A dpm on the sub-floor will do more harm than good.
 
Hi
Thank you for the reply, I'm worried now, what harm will laying the DPM do?
 

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